| Abstract (In Chinese) | 第4-5页 |
| Abstract (In English) | 第5-6页 |
| Chapter 1 Introduction | 第9-28页 |
| 1.1 Background | 第9-14页 |
| 1.2 State of the art of the key issues | 第14-24页 |
| 1.2.1 Shear capacity of UHPC Beam | 第15-17页 |
| 1.2.2 Fiber and conventional shear reinforcement effect | 第17-19页 |
| 1.2.3 Shear capacity of UHPC U-shaped permanent form and normal concrete (UHPC-RC) composite Beam | 第19-24页 |
| 1.2.4 Permanent formwork thickness and shear reinforcement effect on UHPC-RC composite beam | 第24页 |
| 1.3 Concrete plasticity theory and strut and tie model (STM) | 第24-25页 |
| 1.4 Main content and research objective | 第25-26页 |
| 1.5 Research diagram and routine | 第26-28页 |
| Chapter 2 Mechanical properties of UHPC and concrete plasticity theory | 第28-36页 |
| 2.1 Fundamental theory of concrete plasticity | 第28-29页 |
| 2.2 Coulomb material and modified Coulomb failure criteria | 第29-31页 |
| 2.3 Plastic strains and energy dissipation for modified coulomb material | 第31-34页 |
| 2.4 UHPC uniaxial model | 第34-36页 |
| Chapter 3 Diagonal shear failure mechanism of reinforced UHPC beam | 第36-61页 |
| 3.1 Introduction | 第36-37页 |
| 3.2 Plasticity limit analysis upper and lower bound solutions | 第37-41页 |
| 3.2.1 Modified theoretical model of upper bound | 第39-41页 |
| 3.3 Theoretical model of Lower bound | 第41-43页 |
| 3.4 Direct Strut and tie method (STM) based on single fiber model | 第43-48页 |
| 3.4.1 UHPC beam modeling | 第44-48页 |
| 3.5 Comparison and recommendation | 第48-60页 |
| 3.5.1 Compressive strength effect | 第58-59页 |
| 3.5.2 Steel fiber effect | 第59页 |
| 3.5.3 Shear span effect | 第59-60页 |
| 3.6 Summary | 第60-61页 |
| Chapter 4 Diagonal shear failure mechanism of pre-stressed UHPC beam | 第61-73页 |
| 4.1 Strut and tie model (STM) | 第61-66页 |
| 4.1.1 Single Strut and tie method (STM) modeling for pre-stressed UHPC beam | 第61-66页 |
| 4.2 Comparison and recommendation | 第66-70页 |
| 4.3 Effect of fiber volume | 第70-71页 |
| 4.4 Effect of shear span | 第71-72页 |
| 4.5 Summary | 第72-73页 |
| Chapter 5 Theoretical model of semi-fabricated UHPC-RC composite beam | 第73-89页 |
| 5.1 Introduction | 第73页 |
| 5.2 Theoretical model of Upper bound theorem | 第73-76页 |
| 5.3 Theoretical model of Lower bound theorem | 第76-79页 |
| 5.4 Comparison and recommendation | 第79-87页 |
| 5.4.1 Effect of UHPC precast section | 第85-86页 |
| 5.4.2 Shear reinforcement effect | 第86-87页 |
| 5.5 Summary | 第87-89页 |
| Conclusions | 第89-91页 |
| 结论 | 第91-92页 |
| References | 第92-99页 |
| Acknowledgement | 第99页 |
